Theerasak Photha wrote: > I wrote this for someone else to take an object and list of types, > then check if obj is one of those types,
This is already what isinstance(obj, tuple_of_types) does. > raising an error otherwise. > > Is it enough to rely on side effects or absence thereof, or should I > put return True in here somewhere? What for ? > def test_obj_type(obj, types): > for type in types: > if isinstance(obj, type): > break > else: > raise ValueError, 'object is not in %s' % types def checkinstanceof(obj, types): if not isinstance(obj, types): raise ValueError('object is not an instance of %s' % str(types)) Now the real question : what if the object is not an instance of any of the types, but still support the expected interface ? > -- Theerasak -- bruno desthuilliers python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for p in '[EMAIL PROTECTED]'.split('@')])" -- http://mail.python.org/mailman/listinfo/python-list